Air-line oiler



March l1, 1930. G. G. TUTTLE 1,750,070

AIR LINE OILER Filed May 6' 1927 BYMM HIS AT RNEY Patented Mar. 11,1930

UNITED STATES PATENT ori-"lor:v

@ROVER G. TUTTLE, OiF IPHILLIPSBURG,INEWVJERSEY, ASSIGNOR TO INGERSOLL-RAND COMPANY, F JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY AIR-LINE OILEE Application led May 6, 1927 .l Serial No.-189,3l1.

rlhis invention relates to oiling devices,vb`ut more yparticularly to an air line oiler of the type adapted to be attached to a hose line conveying pressure fluid from a source of supply to a machine or machines intended to be yactuated thereby, such 'as rock drills, air motors, or other reciprocating machines which causepulsations in the pressure fluid due to the admission and cut-oil of pressure fluid to the machine. v 'lhe objects of the invention are to Isupply lubricant in adequate quantities and ina sultable form to fluid actuated machinesthrough the agency ,of the'pressure fluid utilized for actuating such machines; to `prevent delays in the drilling operation for the purpose ot replenishing the supply lof lubricant; and to enable practically the entire supply of lubricant to be exhausted from the container 2o after each lilling thereof.

Other objects will be in part obvious and in part pointed out hereinafter.

The ligure in the drawing is a vertical section of the oiler applied to a hose line of a rock drill. v

Referring more particularly to the drawing, A designates a rock drill having connected thereto a hose line B which may lead from a suitable source of pressure fluid supply (not shown) The rock drill A may haof any conventional type. For purposes of illustration a drill of the drifter type is shown mounted on a tripod C with`respe ct to which it may be actuated to and from the work by means of a feed screvs7 D in a well known manner.

The present invention comprises a connection E having a passageway F therethrough to afford communication between adjacent sections of the hose line B threaded, into suit'- ably threaded apertures Gr at the ends of the passageway l?. Preferably the passageway F is provided with a restricted or throat portion H in the form of a Venturi tube inter-V mediate its ends so that the velocity of the pressure iluid flowing through the passage- Way ,F will be somewhat accelerated during its passage through the connection.

@n one side of the connection E is formed a projection J having a recess K opening from .operat1on.

the free end of the projection. The projection J in this instance is provided with exterior threads L for'cooperation with corresponding threads G formed in theend of a guard P screwed on the projection el'. rllhe guard P is preferably of cup-like shape and may be provided with longitudinal slots Q, or their equivalent, to enable the attendant to view the interior of the guard P.

Any convenient means may be provided on the guard for cooperation with a wrench or other suitable tool for manipulating the guard l. Such means in the present instance consists of a pair of lugs R on the closed end of the guard spaced to form a slot Sforthe reception of a bar or Wrenchwhereby the guard may be screwed on and oli the projection J.

Disposed within the guard P is a container T, the interior U of which forms a reservoir for oil W. The container T-"in this instance consists of a bottle, the open end orneck X of which extends into the recess K of the projection J and abuts a pad Y in the recess K whereby the edge of the neck X is sealed and the container is cushionedfagainst the effects of the jars set up by the rock drill during its The pad Y may be of any suitable material but' preferably consists of cork which possesses the desirable quality of compressibility and is also impervious to oil. Preferably, a cup-shaped pad Z is disposed between the bottoms of the guard P and the container T to centralize the outer end of the container with respect to the guard P and thus prevent injury to the container during the assembling of the device or such injuries as may occur due to the jars set up by the rock drill.

Suitable means are provided for conveying the oil W from the reservoir U into the passageway F from whence it may be con- -veyed by the pressure Huid flowing therethrough to the rock-drill A. To that end a tube b is disposed in the wall of the connection E to extend with its outermost free end to a point near the bottom ofthe reservoir U and with its opposite end partly into the passageway F. The tube is preferably curved at its free end c so that the inlet openingpof the tube may lie near the lowerinost Elu point of the reservoir to enable substantially all ofthe oil in the reservoir to be utilized after each filling.

With respect to the passageway F, the tube b is preferably located on that side of the restricted portion H nearest the outlet opening of the said passageway F, so that the full effect of the increased velocity of the pressure fluid iowing through the passageway may be obtained for the purpose of drawing the oil through the tube b.

In order that an adequate pressure may be maintained on the surface of the oil W, and, further, that the pulsations in the hose line may be transmitted to the oil W for the pur'- pose of elevating the oil in the tube 6, a passage d is formed through the connection E and the pad Y. Due to the compressible quality of the pad Y, however, a tube e is disposed in said pad to insure constant con1- munication between the reservoir U and the passageway F. This is merely a precautionary measure to prevent accidental closing of the passage d and may be omitted in the event that material of greater resistance is substituted for that of the cork pad Y.

From the foregoing description, the operation of the device should be obvious. Briefly described, however, the operation is as follows After the oiler has been assembled, it may be attached to the hose line B, preferably in such position with respect to the hose line that the container depends therefrom. The rock drill may then be set in operation and a portion of the pressure Huid flowing through the passageway F will then flow Into the reservoir to act on the surface of the oil. The pressure fluid thus admitted to the reservoir will tend to elevate the oil in the tube b and this, together with the suction created by the pressure fluid flowing over the outlet opening of the tube b, will draw a constant supply of oil into the restricted portion E of the passageway F. Such oil mingling with the pressure fluid flowing to the rock drill will be conveyed thereby to the cooperating surfaces of the movable and stationary elements of the drill. In this way an adequate supply of lubricant may at all times be provided for the drill during its operation.

Whenever the supply of pressure fluid to the rock drill is cut off, the supply of lubricant will, of course, also be cut off. It will therefore be readily seen that the present invention precludes the possibility of oo'ding the rock drill or other machine with oil during the inoperative eriod as frequently happens in machines o? this type where the attendant may neglect shutting off communication between the oil reservoir and the machine.

I claim:

An air line oiler comprising a connection adapted to be attached to an air line, said connection having a passageway affording communication between adjacent sections of the air line, said passageway having a restricted portion, a threaded projection on one side of the connection having a recess, a bottle forming a reservoir for oil and extending with its open end into the recess, a

guard surrounding the container and cooperating with the threaded proj eetion to hold the container in assembled position, a tube in the bottle extending with one end into the passageway and with its other end to a point near the bottom of the bottle for conveying oil into the passageway, means in the recess to seal and cushion the open end of the container, a passage through the connection and said means for constantly admitting pressure fluid into the container to act on the surface of the oil in the container for transmitting the pulsations in the hose line to the oil and thus force oil through the tube into the pas sageway, and yieldable means between the bottom of the container and the guard to censpecification.

GROVER G. TUTTLE. 

